Filter device for use with light and method making the same

Details Filter device for use with light and method making the same Filter device for use with light and method making the same

1998-10-27

2000-08-29

Healy, Brian

Optical waveguides

Planar optical waveguide

Thin film optical waveguide

385129, 385131, 359589, 359590, G02B 610, G02B 528

Patent

active

061120057

ABSTRACT:
A filtering assembly includes a first substrate piece and a second substrate piece combined together with their dielectric band-pass filter-film adhered to each other in a face-to-face manner. A corresponding method for making the same includes following steps: (1) providing a raw substrate having at least a twice dimension of final assembly; (2) coating a designated dielectric band-pass filter-film on one side of said raw substrate; (3) dividing said coated substrate into two semi-finished substrate pieces with said filter-film thereon; (4) combining these two semi-finished substrate pieces together wherein said filter-film of one piece is directly adhered to that of another piece by a thin adhesive optical coupling layer, so that the filtering assembly has said filtering means sandwiched between said two substrates.

REFERENCES:
patent: 4963844 (1990-10-01), Konishi et al.
patent: 5687263 (1997-11-01), Kasa et al.
patent: 5726805 (1998-03-01), Kaushik et al.
patent: 5872655 (1999-02-01), Seddon et al.

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